Department of Land and Natural Resources spokeswoman Deborah Ward says the trail's length and remote location make it difficult and costly to monitor and maintain.

Campers can take an 11-mile hike to Kalalau Beach. Some reach the beach by illegal transport operators.

The visitors can overwhelm compost toilets sized for legal camper capacity. Leftover rubbish and damage to ecosystems are other problems.

The Garden Island reports the Division of State Parks has hired a full-time interpretive ranger whose duties will be concentrated within the first two miles of Kalalau Trail. Ward says the ranger's duties will include spot checks for permits.